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A Study on Parents' View of the Augmented Reality Card Use for Pr e-School Education
Deng, Qianrong,Cho, Dong-min Korea Multimedia Society 2021 멀티미디어학회논문지 Vol.24 No.6
Parents' influence on children's development is generally considered essential. This paper attempts to explore the role of AR in preschool education from the perspective of parents, aiming to help parents better understand the impact of children's use of augmented reality in preschool education. The subjects were parents of children in the preschool age range (3-6 years old), and the experimental equipment was AR cognitive cards. In order to extract parents' views on AR, five parents were invited to conduct an experiment with their children using AR cognition cards, and then an open interview survey was conducted. In the second experiment, the answers obtained from the first experiment were sorted out and formed a questionnaire to conduct a closed-book survey. It shows that parents are satisfied with the characteristics of AR to assist their children's learning. At the same time, parents also value technology, usage management and playing environment. AR can stimulate children's learning initiative. Children like to use AR, AR is suitable for learning, make parents satisfied. But even if AR is suitable for learning, parents will control the time their children use it.
Qiang Wei,Guoquan Yan,Qianrong Li 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.10
1,4-Dihydropyridines provide the principal structural components for calcium channel blockers, which are usually studied by expeditious qualitative and quantitative analyses in pharmaceutical research and development. In this work, through the use of high-resolution electrospray ionization ion-trap time-of-flight multistage tandem mass spectrometry (ESI-IT-TOF/MSn), the accurate masses and fragmentation pathways of protonated derivatives (1–12) of 1,4-dihydropyridine derivatives are determined and rationalized. All protonated molecules are further fragmented by loss of the neutral groups 4-R1H, 3-C2H4 , 5-C2H4 , R2OH, or CO, yielding three fragmentation pathways with two different fragment nuclei of pyridine or 1,4-dihydropyridine. During the formation process of the pyridine nucleus, one pathway is that product ions at m/z 224 or 252 are the common diagnostic masses in most compounds; the other pathway is that the product ions are obtained by the loss of R2OH. The 1,4-dihydropyridine nucleus in three compounds arises from double C2H4 elimination. Simultaneously, this study supplies abundant special fragment information, which potentially provides a new method for structural studies of 1,4-dihydropyridine derivatives.